Comparison of New Ultrasonic Digestion Approaches for Plant Matrices in the Analysis of Trace Metals by Inductively Coupled Plasma–Optical Emission Spectroscopy Analysis: Contrast with USEPA Method 3050B
| Autor: | Golam Ahmed, Lebogang Morekisi, Kwenga Sichilongo, Inonge T. Chibua, Bongani Sethebe, Zibisani Bagai, Hilary Shoniwa, David T. Takuwa |
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| Rok vydání: | 2016 |
| Předmět: |
inorganic chemicals
Cadmium 010504 meteorology & atmospheric sciences Chemistry 010401 analytical chemistry Analytical chemistry Soil Science chemistry.chemical_element Zinc 01 natural sciences 0104 chemical sciences Mercury (element) Chromium Leaching (metallurgy) Inductively coupled plasma Agronomy and Crop Science Selenium Arsenic 0105 earth and related environmental sciences |
| Zdroj: | Communications in Soil Science and Plant Analysis. :1-9 |
| ISSN: | 1532-2416 0010-3624 |
| DOI: | 10.1080/00103624.2016.1141925 |
| Popis: | An ultrasonic method using two approaches, A and B, along with a reference Environmental Protection Agency (EPA) Method 3050B [i.e., a mixture of 30 mL of nitric acid–hydrochloric acid–hydrogen peroxide–water (HNO3-HCl-H2O2-H2O)] were contrasted for leaching of a plant matrix. The trace metals were arsenic, cadmium, cobalt, chromium, copper, mercury, manganese, nickel, lead, selenium, and zinc (As, Cd, Co, Cr, Cu, Hg, Mn, Ni, Pb, Se and Zn) and quantified by ICP-OES followed by an investigation into residue formation and the impact of digestion time. Approach B was the most accurate and precise with percent recoveries ranging between 99 and 120%, whereas ultrasonic approach A and the USEPA method 3050B gave similar results with poor accuracies and precisions. In the optimization of the digestion time using approach B, the total metal recovery was fairly the same over a period of 120 min except for Cr and Cu, which showed slight variations. |
| Databáze: | OpenAIRE |
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